After my wife passed away, I lived alone. I didn't have many relatives or friends, and my parents were far away from each other. I stayed at home except for necessary working hours. After turning off the alarm clock, I heard a low knock on the door. When I opened the door, it was - a little girl carrying a suitcase! She looked to be only sixteen or seventeen years old, with disheveled hair and baggy clothes. Before I could say anything, she said, "I am Xie Ning's sister."